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Metropolitan Police said in a statement: "Arthur Collins, 25, was arrested at an address in Rushden, Northamptonshires on Saturday night, 22 April by officers from the Met's Specialist Crime & Operations and Hackney Borough, with the assistance of armed officers from the East Midlands Operational Support Service and Northamptonshire Police.

"Collins has been arrested on suspicion of attempted murder. He will be taken into custody at a London police station in due course."

Police believe trouble brewed between two groups at the packed club and the acidic substance was flung directly over the pair.

Police have revealed they would like to speak to Arthur Collins over the suspected acid attack which left 16 people injured in Dalston (Image: Metropolitan Police/PA Wire)

Mangle nightclub in Dalston, east London, where at least 12 revellers have suffered burns from a noxious substance. (Image: Jack Hardy/PA Wire)

Collins' arrest comes after a man was charged in relation to the same incident.

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Collins, from Hertfordshire, had been in a relationship with reality star Ferne, best known for her appearances on The Only Way Is Essex and This Morning.

The pair posed together for their first photoshoot as a couple - and also opened up about their marriage plans and dreams to start a family - shortly before the incident took place.

The couple recently posed for their first exclusive shoot as a couple in OK! Magazine (Image: OK! Magazine)

After the incident, Ferne urged him to contact police, with a spokeswoman for the TV personality - who recently deleted all trace of Collins from her social media - saying: "Ferne is aware that the police wish to speak to Arthur Collins and the nature of the accusations against him.

"Obviously these are highly shocking and Ferne has co-operated with the police in their inquiries. She was not with Arthur on Sunday night, was not at Mangle, and has no direct knowledge of the events that unfolded."